.xuanfu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
    box-shadow: 0 3px 3px 3px rgb(107, 107, 107);
    /* background-color: rgb(236, 215, 215); */
    z-index: 999999;
    border-radius: 100%;
}